Quest Cal-Mag Chewable is a high-quality supplement containing calcium and magnesium in a 2:1 ratio, plus vitamin D3. The spearmint flavour gives this product a refreshing taste and makes it ideal for those who want the benefits of a high-potency calcium and magnesium supplement, but have difficulty swallowing tablets. Calcium and magnesium are vital components of bone and tooth metabolism, and both participate in energy production, muscle contraction, nerve function, and the maintenance of the acid-alkali balance of body fluids. Vitamin D is essential for the absorption of calcium.Each chewable, spearmint-flavoured tablet of Quest Cal-Mag Chewable contains 300 mg of elemental calcium (citrate, phosphate), 150 mg of elemental magnesium (citrate, oxide), and 100 IU of vitamin D3. This product contains no artificial preservatives, colours, flavours, or added sugar, starch, milk products, yeast, gluten, or salt.